Science Help. Can someone answer and explain these for me?

Question

This is a study guide the teacher gave us I have some ideas on the answers but I'm not sure. Please help. The teacher also gave us a website that might help but it just made it worse for me. Here's the website if any of you want to use it
http://www.exploratorium.edu/learning_studio/auroras/index.html
Thanks for your help. By the way 10 points for the best answer.

1.) What is the importance of solar cells?
Solar cells convert solar energy into water.
Solar cells convert solar energy into plants.
Solar cells convert solar energy into electricity.
none of the above
2.) What is one of the most important uses of solar cells?
Powering space vehicles
Cooking hot dogs
Distilling water
Making steam
3.) How is solar energy collected on earth satellites?
Solar cells convert solar energy into nuclear energy.
Solar cells convert solar energy into electricity to charge batteries.
Solar cells convert solar energy into electricity plants.
Solar cells power the sun.
4.) What do you think might be some of the most important problems that could be encountered when using solar cells in outer space?
The days in outer space are not short enough.
The days in outer space are not long enough.
The solar cells might get wet.
There is not enough concentrated sunlight in outer space to power the cells.
5.) Why would there be few solar heated homes in Canada, but many in Florida?
In winter Canada has very long nights and the sun is not out.
People in Canada do not want solar heated homes.
Solar heated homes are expensive.
People in Canada do not understand solar cells.
6.) How do solar flares and sunspots affect the earth?
They disrupt radio communications and magnetic compasses.
They may affect weather patterns.
both 1 and 2
neither 1 or 2
7.) Why do sunspots appear as darker spots on the surface of the sun?
They are cooler than the surrounding areas.
They are hotter than the surrounding areas.
They are made up of different substances than the surrounding areas.
They weigh less than the surrounding areas.
8.) Explain the existence of the magnetosphere.
Charged particles from the sun that reach Earth are trapped by the magnetic field of the earth and spiral back and forth between the poles of the Earth.
Charged particles form a belt of radiation.
both 1 and 2
neither 1 or 2
9.) Which of the following accurately describes sunspots?
They can accurately predict the stock market.
They are storms of swirling electrically charged gases on the surface of the sun.
They are permanent.
They have no effect on the earth.
10.) Which of the following statements correctly describes sunspots and solar flares?
Both are storms resulting from magnetic and electrically-charged particle activity.
Flares go above sun's surface, whereas sunspots are primarily on the sun's surface.
Flares are outbursts of shorter duration, and send out UV light and X-rays.
all of the above

Answer 1

Best Answer - Chosen by Voters

1. solar to electric energy
2.space vehicles
3.solar to electric to battery
4.lack of concentrated solar
5.long nights
6.both 1 and 2
7.cooler
8.both 1 and 2
9.storms
10.all